Skip to content
Fencer Vulns
high 7.5

CVE-2018-10811 json

strongSwan 5.6.0 and older allows Remote Denial of Service because of Missing Initialization of a Variable.

published 2018-06-19 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-2880

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.2%
EPSS 6.2% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

strongSwan 5.6.0 and older allows Remote Denial of Service because of Missing Initialization of a Variable.

Patch / fix

  • strongswan strongswan 5.6.3
  • strongswan Debian 14, Debian 13, Debian 12 5.6.3-1

debian advisories DEBIAN-CVE-2018-10811

  • strongswan Ubuntu 14.04 LTS 5.1.2-0ubuntu2.10
  • strongswan Ubuntu 16.04 LTS 5.3.5-1ubuntu3.7
  • strongswan Ubuntu 18.04 LTS 5.6.2-1ubuntu2.2

ubuntu advisories UBUNTU-CVE-2018-10811

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • strongswan SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +13 more 5.1.3-26.13.1
  • strongswan SLE Module for Package Hub 15, SLE Module for Basesystem 15 SP1, SLE Module for Basesystem 15 5.6.0-4.3.2

suse advisories SUSE-SU-2019:3266-1SUSE-SU-2019:3056-1

  • strongswan openSUSE Tumbleweed 5.9.0-1.9
  • strongswan openSUSE Leap 15.1 5.6.0-lp151.4.3.1
  • strongswan openSUSE Leap 15.0 5.6.0-lp150.3.3.1

opensuse advisories openSUSE-SU-2024:11411-1openSUSE-SU-2019:2598-1openSUSE-SU-2019:2594-1

  • strongswan Alpine 3.24, Alpine 3.23, Alpine 3.22 +14 more 5.6.3-r0

alpine advisories ALPINE-CVE-2018-10811

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-10811 updated cvss 5.9

strongswan: Missing initialization of a variable in IKEv2 key derivation allows denial of service

  • Red Hat Enterprise Linux 7 strongimcv
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

6.20% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-909 Missing Initialization of Resource

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.